"We construct an empirical model of the galaxy-dark matter halo connection through the ‘age matching technique’ to investigate the galaxy clustering and the spatial distributions of galaxies in clusters.
We assign stellar mass and specific star formation rate (sSFR) to dark matter halos in a cosmological N-body simulation.
In particular, we introduce a new sSFR assignment method in satellite galaxies using the redshift when they are accreted on to larger halos and show that our model reproduces the observed radial dependence of the quenched fraction more than that based on the simple age matching method.
This result indicates that radial profile of the quenched fraction is
an important constraint on the quenching processes of cluster galaxies."